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Finding the Fourth Proportional to 173,905.80, 260,858.70 and 107,129.40

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Solution

The fourth proportional to 173,905.80, 260,858.70 and 107,129.40 is: 160,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,905.80 : 260,858.70 = 107,129.40 : x
  2. Step 2: Convert to fraction form
    173,905.80/260,858.70 = 107,129.40/x
  3. Step 3: Cross multiply
    173,905.80x = 260,858.70 × 107,129.40
  4. Step 4: Simplify right side
    173,905.80x = 27,945,636,015.78
  5. Step 5: Solve for x
    x = 27,945,636,015.78/173,905.80
  6. Step 6: Final answer
    x = 160,694.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.